Physics, not magic numbers.
Resonance describes how a system responds to vibration. It is not a promise that a named frequency heals a condition.
Evidence over claims
The 92% finding, its source and Biotune’s approach to sound design.
The Biotune philosophy
We don’t build programs around Solfeggio promises or claims that one frequency delivers one guaranteed result. We focus on how sound is delivered, how it moves through the body, and how people respond.

A 2026 spectrum analysis of 150 streaming tracks labeled 528 Hz or 432 Hz found that 92% lacked the advertised frequency and 86% were slow ambient music (Yuvacı, 2026).
Resonance describes how a system responds to vibration. It is not a promise that a named frequency heals a condition.
Artists follow a protocol. Brainwave states and nervous-system regulation guide the design, with BodyWaves adding sound you can feel on compatible equipment.
Biofeedback informs Tuning and Pro. Pilots and clinical practice inform Clinical. Seven years of experience shape the work, not a guarantee of individual results.
The fixed Solfeggio frequency list was created in the 1990s through numerology, not derived from medieval chant or physics. The Schumann resonance is a 7.83 Hz electromagnetic phenomenon, not an audible tone your music can align with. And because resonance depends on mass and stiffness, no single frequency resonates the same organ in every body. Some studies do measure real responses to particular tunings, such as a lower heart rate with 432 Hz music. That is psychoacoustics, not a miracle number. We design for brainwave states and nervous-system regulation, then test the response.